Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D33/00—Details of, or accessories for, sacks or bags
  • B65D33/16—End- or aperture-closing arrangements or devices
  • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
  • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
  • B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
  • B65D33/2533—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D33/00—Details of, or accessories for, sacks or bags
  • B65D33/16—End- or aperture-closing arrangements or devices
  • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
  • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B70/00—Making flexible containers, e.g. envelopes or bags
  • B31B70/26—Folding sheets, blanks or webs
  • B31B70/262—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement
  • B31B70/266—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement involving gusset-forming
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B70/00—Making flexible containers, e.g. envelopes or bags
  • B31B70/26—Folding sheets, blanks or webs
  • B31B70/36—Folding sheets, blanks or webs by continuously feeding them to stationary members, e.g. plates, ploughs or cores
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B70/00—Making flexible containers, e.g. envelopes or bags
  • B31B70/74—Auxiliary operations
  • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
  • B31B70/813—Applying closures
  • B31B70/8131—Making bags having interengaging closure elements
  • B31B70/8133—Applying the closure elements in the cross direction

Definitions

• the invention relates to a method and an apparatus for producing film bags, the V-shaped inserted gussets and a reclosure with a slider in a head-side filling opening.
• the reclosure of the foil pouch consists of two profile strips and a slide coupling the profile strips.
• One of the profile strips is connected to a front side of the film bag and the other profile strip after filling of the film bag connected to the other front side.
• the initially flat foil bags are loaded into bag filling devices with filling material. The filling takes place at the head of the bag. The contents are introduced into an opening which is still present between the reclosure and a front side of the film bag. Thereafter, this opening is closed by a sealed seam.
• Foil bags with the described features are used, inter alia, for packaging animal feed.
• Foil bags with the described features are known from DE 202 07 333 U1. Their production is complicated. Following the bag production, the reseals are applied in a downstream part of the plant. For this purpose, a film section of the already manufactured film bag is unfolded in the head region of the bag, placed a reclosure on the underlying film web and connected to this. Thereafter, the unfolded film section must be folded back and the missing sealing seams are attached.
• the devices required for the application of reclosures must perform several steps and have a significant footprint. There is a need to integrate the application of reclosures while avoiding a downstream part of the plant in conventional bag-making process.
• the invention has for its object to provide a method in which the application of the reclosures during the continuous web advance of a flat film web takes place before the bag forming.
• the subject matter of the invention and solution to this problem is a process for producing film bags according to claim 1.
• the process according to the invention comprises the following process steps:
• the film web is passed through a folding station, in which the film web is folded and front surfaces and gussets are formed;
• the invention is based on the idea of applying the reseals to the flat film web before the film web passes through a folding station, in which it is folded and gussets are formed.
• the application of the reclosures according to the invention can be integrated into existing bag-making systems, the method according to the invention making use of the punching devices and folding devices already present in a bag-making machine. In this case, however, the technical problem is to be solved that the reclosures during transport of the film web through the system, in particular in the Umfalt coupleden move, because the reclosures are initially connected only at the ends of the film web. There must be an opening between the profile strips of the reclosure and the film web so that the bags can be filled at the head end.
• weakening lines are introduced into the flat film web transversely to the web longitudinal direction, which are arranged at the level of the window-shaped recesses and extend over the web width with the proviso that between the weakening lines and the window-shaped recesses in each case a 5 mm to 50 mm wide non-weakened film area remains.
• the weakening lines are, for example, a perforation produced by punching or a weakening device produced by means of laser technology. line.
• the film web is guided in the folding station in such a way that the edges of the folding tools rest against the non-weakened film areas between the perforation / weakening line and the recesses.
• the folding of the film web into a tubular web takes place by using triangular folding sheets, the window-shaped punched-out portions being guided centrally over the triangular sheets.
• the bags can be separated from the bag string in various ways.
• An embodiment of the method according to the invention provides that the bags are separated by a separating cut of the bag string, wherein between the cutting edge and the adjacent weakening line remains a strip-shaped portion which covers the reclosure.
• the strip can be used as a tamper-evident closure if the double-layered strip is sealed with a transverse seal after filling the foil bag at its upper edge.
• the top strip must be cut off, exposing the reclosure at the upper edge of the foil bag. If the sealing seam of the waste strip is undamaged, it is ensured that the foil bag has not previously been opened.
• the bags can also be separated along the lines of weakness of the bag string by a tensile force is applied, for example by a train delay on the bag to be separated in the web longitudinal direction.
• the bags are torn from the bag string along the line of weakness.
• At the bottom end of the demolished foil bag remains a remnant, which can be used as a material for forming and sealing the bag bottom.
• a further embodiment of the method according to the invention provides that the bags are separated from the bag strand by a separating cut and that a strip-shaped section consisting of two film layers remains between the cut edge and the re-closure, which covers the re-closure, and that the foil layers covering the re-closure be severed from the bag with a knife to expose the slide of the resealer.
• supernatant film sections are separated after bag folding and welding by folding and cutting. This results in smooth film edges, which are not bevelled at the longitudinal sealing seams.
• the invention is also an apparatus for performing the method with
• an unwinding station for removing a flat film web from a film roll
• a feed device for prefabricated reclosures consisting of in each case two profiled strips which lie on one another and connected to one another and a slider which engages over the closing edges of the profiled strips in a rider-like manner
• a folding station with folding devices for double-layer folding of the film web and for inserting V-shaped side folds
• the punching device arranged in front of the folding station comprises additional punching tools which insert slide punched holes in the planar film web, and wherein a device is provided between the punching device and the folding station which positions the reclosures transversely to the web longitudinal direction on the flat film web so that the slides of the reclosures lie in the assigned Schieberausstanzache.
• Fig. 1 shows the block diagram of a plant for the production of foil bags, the V-shaped inserted gussets and a
• FIG. 2 shows a detail of a flat foil web with punched-out portions introduced according to the invention before the
• the plant shown in FIG. 1 comprises an unwinding station 1 for removing a flat film web 2 from a film roll 3, a punching device 4, a feed device 5 for prefabricated reclosures 6, a folding station 7 with folding devices for double-layered folding of the film web 2 and for insertion V-shaped gussets, sealing stations 8 for transverse sealing and longitudinal sealing of the folded material web and a station 9 for separating foil bags from the material web.
• an unwinding station 1 for removing a flat film web 2 from a film roll 3
• a punching device 4 for prefabricated reclosures 6
• a folding station 7 with folding devices for double-layered folding of the film web 2 and for insertion V-shaped gussets
• sealing stations 8 for transverse sealing and longitudinal sealing of the folded material web
• a station 9 for separating foil bags from the material web.
• window-shaped punch-outs 10 which delimit the upper end of the laterally formed side folds, as well as slide punch-outs 11 are introduced (FIG. 2).
• the reclosures 6 supplied to the material web consist of two profiled strips 12 lying on top of one another and connected to one another, as well as a slider 13 which engages over the closing edges of the profiled strips in a rider-like manner.
• the prefastened reclosures 6 are placed on the flat film web 2 so that the slides 13 are located in the Schieberausstanzungen 11, and are then connected at the ends 14 with the film web 2.
• Fig. 2 shows the film web with reclosing reclosures 6, before the film web of Umfaltstation 7 is supplied. In the folding station 7, the film web is folded into a double-layer material web and gussets are inserted.
• the reclosures 6 are connected to a front surface of the bag by means of a sealing seam with the inclusion of the upper end of the gussets, and the superimposed film layers are joined with further sealing seams 15 to form a bag strand 16 consisting of baggy sections.
• bags 17 are separated from the bag string.
• the process product is shown in Fig. 3a.
• the film bag 17 shown in Fig. 3a has two front sides, V-shaped inserted between the front pages gussets 18 and a reclosure 6 in a head-side opening of the bag.
• the reclosure 6 consists of two profile strips 12 and a slide 13 coupling the profile strips.
• One of the profile strips 12 is connected to a front side of the bag.
• the other profile strip can be connected after filling the bag with the other front side.
• the superimposed film layers of the bag are connected to transverse and longitudinal sealing seams 15 at the bottom and along the edges of the side pleats 18, the longitudinal sealing seams 19 extending along the side pleats 18 extending from the bottom to the upper edge of the bag.
• the reclosure 6 including its slider 13 is spaced from the upper edge of the bag within the bag.
• a front side of the bag contains a slider fitting adapted to the dimension of the slide 13. tion 11, in which the slider 13 is positioned before the first
• the front sides of the film bag 17 have at the upper end of the bag on a reclosing occlusive strip-shaped portion 20 which is torn off along a arranged approximately at the level of the slider or below the slider line of weakness 21.
• the weakening line 21 consists of a perforation produced by punching.
• the line of weakness can also be produced by laser technology if a visually attractive tear-off edge is desired.
• punch lines 22 which extend through the longitudinal sealing seams 19 to the outer edges of the bag.
• the gussets 18 terminate below the perforation line 21.
• the strip-shaped portion 20 can be separated along the perforation line 21 and the subsequent punching lines 22 of the film bag 17. In this case, the reclosure 6 is exposed.
• the perforation line 21 is introduced into the flat material web and is shown in FIG. 2.
• FIG. 2 shows that the perforation line 21 extends over the width of the web, with the proviso that between the perforation and the window-shaped recesses 10 there is a respective 5 mm to 50 mm wide, non-perforated film region 23.
• the bags are separated by a separating cut of the bag string 16, wherein between the cutting edge and the adjacent perforation line 21, a strip-shaped portion remains, which covers the reclosure.
• the film bags shown in Fig. 3a are used for example for packaging animal feed.
• the filling takes place at the head of the bag.
• the contents are introduced into an opening which is still present between the reclosure and a front side of the film bag. Thereafter, this opening is closed by a sealed seam.
• the tamper-evident closure is the upper edge of the strip-shaped section, the first one Use of the foil bag is demolished, sealed.
• the sealing takes place with a sealing seam 24, which connects the film layers.
• Beutelbehellstrom the bottom of the foil bag is still folded into a floor stand.
• the slide 13 of the prefabricated film bag is exposed. This is achieved in the system shown in FIG. 1 in that the bags are separated along the perforation line 21 from the bag string. At the bottom end remains a remnant 25, which contains the slide punch 11 and is folded after filling the bag together with the bottom fold.
• the introduction of the perforation line 21 is not mandatory.
• the bags are separated by a separating cut of the bag string 16.
• a strip-shaped section consisting of two film layers remains, which conceals the reclosure 6.
• the reclosing covering film layers are separated in the last workstation by folding and cutting.
• the upper-side film edges of the bag are smooth and have no Perforationsabrisshou on.

Applications Claiming Priority (2)

Publications (2)

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ID=36969153

Family Applications (1)

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• 2005
  • 2005-05-18 DE DE102005022742A patent/DE102005022742B4/de not_active Expired - Fee Related
• 2006
  • 2006-05-17 EP EP06753658A patent/EP1899152B1/fr not_active Not-in-force
  • 2006-05-17 CA CA002608559A patent/CA2608559A1/fr not_active Abandoned
  • 2006-05-17 US US11/920,527 patent/US20090272481A1/en not_active Abandoned
  • 2006-05-17 AU AU2006249118A patent/AU2006249118A1/en not_active Abandoned
  • 2006-05-17 JP JP2008511615A patent/JP5037497B2/ja not_active Expired - Fee Related
  • 2006-05-17 BR BRPI0610680-3A patent/BRPI0610680A2/pt not_active IP Right Cessation
  • 2006-05-17 AT AT06753658T patent/ATE448076T1/de active
  • 2006-05-17 DE DE502006005355T patent/DE502006005355D1/de active Active
  • 2006-05-17 NZ NZ563371A patent/NZ563371A/en not_active IP Right Cessation
  • 2006-05-17 WO PCT/EP2006/004633 patent/WO2006122760A1/fr active Application Filing
  • 2006-05-17 ZA ZA200710314A patent/ZA200710314B/xx unknown

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